/*
 * Copyright (c) 2010-2012 Sonatype, Inc. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient.extras.guava;

import org.asynchttpclient.ListenableFuture;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

public final class ListenableFutureAdapter {

    /**
     * @param future an AHC ListenableFuture
     * @param <V> the Future's value type
     * @return a Guava ListenableFuture
     */
    public static <V> com.google.common.util.concurrent.ListenableFuture<V> asGuavaFuture(final ListenableFuture<V> future) {

        return new com.google.common.util.concurrent.ListenableFuture<V>() {

            public boolean cancel(boolean mayInterruptIfRunning) {
                return future.cancel(mayInterruptIfRunning);
            }

            public V get() throws InterruptedException, ExecutionException {
                return future.get();
            }

            public V get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
                return future.get(timeout, unit);
            }

            public boolean isCancelled() {
                return future.isCancelled();
            }

            public boolean isDone() {
                return future.isDone();
            }

            public void addListener(final Runnable runnable, final Executor executor) {
                future.addListener(runnable, executor);
            }
        };
    }
}
